StackPulse

Always-current free tiers and pricing for developer tools — compare email APIs, see what changed, and pick the best free tier. Every comparison is built from each vendor's own pricing page and carries the date it was last verified, so you never read a stale free-tier number. Pricing here was verified on 2026-06-04 and is refreshed within 30 days.

Free-tier ranking

Best free transactional email tiers, ranked (2026)

Alternatives

SendGrid (Twilio) alternatives
Mailgun alternatives
Resend alternatives
Postmark alternatives
Mailtrap alternatives
Brevo alternatives
Amazon SES alternatives

Head to head

resend vs sendgrid
resend vs postmark
mailgun vs sendgrid
postmark vs sendgrid
resend vs mailgun
amazon-ses vs sendgrid
brevo vs resend

Why this exists: developer tools change free tiers and pricing without warning — SendGrid removed its permanent free tier in 2025, and others have followed. StackPulse keeps the comparison current and, on paid plans, alerts you the moment a tool you depend on changes.